115501501 has 4 divisors (see below), whose sum is σ = 117225472. Its totient is φ = 113777532.

The previous prime is 115501433. The next prime is 115501541. The reversal of 115501501 is 105105511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115501501 - 2⁹ = 115500989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115501541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861885 + ... + 862018.

It is an arithmetic number, because the mean of its divisors is an integer number (29306368).

Almost surely, 2^115501501 is an apocalyptic number.

It is an amenable number.

115501501 is a deficient number, since it is larger than the sum of its proper divisors (1723971).

115501501 is an equidigital number, since it uses as much as digits as its factorization.

115501501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723970.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 115501501 is about 10747.1624627154. The cubic root of 115501501 is about 487.0002782824. Note that the first 3 decimals are identical.

The spelling of 115501501 in words is "one hundred fifteen million, five hundred one thousand, five hundred one".